When I upgraded Slackware 11.0 to 12.0 (following Robby Workman's Changes_and_Hints.txt and a few other documents) the default kernel turned out to be huge-smp-2.6.21.5 and I'd like to change to generic-2.5.21.5 because there are notes here and there that third-party software might not want to work with the huge kernel (well, VMware doesn't want to).